1. Season pork aggressively with salt & black pepper2. Preheat a large sauté pan over medium high heat. Add butter to coat bottom (butter will foam & turn brown – don't worry!) and add pork. Brown on all sides and remove from pan & place in slow cooker.3. Wipe pan clean and add fresh butter. Add onions, carrots & garlic and cook until slightly softened.4. Sprinkle flour over vegetables and stir to combine.5. Add vinegar and cook until almost gone.6. Add beer and bring to quick boil stirring to loosen any pan residue.7. NOTE: MAY DO STEPS 1 – 5 UP TO 2 DAYS IN ADVANCE. ADD ALL INGREDIENTS TO SLOW COOKER AT ONCE AND PROCEED8. Pour mixture over pork. Add chicken stock - if needed - to come approximately ½ way up side of pork.9. Cover slow cooker and cook for 6 – 8 hours.10. Remove pork to a plate and cover loosely with aluminum foil.11. Place liquid and vegetables from cooker into a blender and puree. Add chicken stock to thin to desired thickness.12. Bon Appétit!!